Desiccant Air Dryers

The Aircel Ultrapac 2000 Series Dryers (3 - 60 scfm) purification system includes a prefilter, dryer, afterfilter, control system, and automatic condensate drain and silencer. The prefilter retains solids and condensate (oil/water mixture) up to residual oil content 0.03 ppm. The adsorption dryer next in line adsorbs the moisture in the compressed air up to a pressure dew point of -40°F. Finally, in the afterfilter, remaining particles from the drying agent are retained.

Regenerative compressed air dryers use desiccant to adsorb water vapor from the compressed airstream. In the twin tower design one tower dries the air from the compressor while the desiccant in the other tower is being regenerated to provide continuous operation. These dryers are typically referred to as "heatless" or "heated". Heatless dryers do not use any source of heat for regeneration other than the heat given off during the drying phase. This is known as the "Heat of Adsorption". Heated dryers, on the other hand, utilize an external heat source for regeneration and require little or no process air.